// Token: 0x06000020 RID: 32 RVA: 0x000043F8 File Offset: 0x000025F8
private static AesCryptoServiceProvider GetProvider(byte[] key)
{
AesCryptoServiceProvider aesCryptoServiceProvider = new AesCryptoServiceProvider();
aesCryptoServiceProvider.BlockSize = 128;
aesCryptoServiceProvider.KeySize = 128;
aesCryptoServiceProvider.Mode = CipherMode.ECB;
aesCryptoServiceProvider.Padding = PaddingMode.PKCS7;
aesCryptoServiceProvider.GenerateIV();
aesCryptoServiceProvider.IV = new byte[16];
byte[] key2 = EncryptedString.GetKey(key, aesCryptoServiceProvider);
aesCryptoServiceProvider.Key = key2;
return(aesCryptoServiceProvider);
}
public static string DecryptString(string base64StringToDecrypt, string passphrase)
{
string end;
using (AesCryptoServiceProvider provider = EncryptedString.GetProvider(Encoding.Default.GetBytes(passphrase)))
{
byte[] numArray = Convert.FromBase64String(base64StringToDecrypt);
ICryptoTransform cryptoTransform = provider.CreateDecryptor();
MemoryStream memoryStream = new MemoryStream(numArray, 0, (int)numArray.Length);
CryptoStream cryptoStream = new CryptoStream(memoryStream, cryptoTransform, CryptoStreamMode.Read);
end = (new StreamReader(cryptoStream)).ReadToEnd();
}
return(end);
}
// Token: 0x0600001F RID: 31 RVA: 0x00004388 File Offset: 0x00002588
public static string DecryptString(string base64StringToDecrypt, string passphrase)
{
string result;
using (AesCryptoServiceProvider provider = EncryptedString.GetProvider(Encoding.Default.GetBytes(passphrase)))
{
byte[] array = Convert.FromBase64String(base64StringToDecrypt);
ICryptoTransform transform = provider.CreateDecryptor();
MemoryStream stream = new MemoryStream(array, 0, array.Length);
CryptoStream stream2 = new CryptoStream(stream, transform, CryptoStreamMode.Read);
result = new StreamReader(stream2).ReadToEnd();
}
return(result);
}
public static string EncryptString(string plainSourceStringToEncrypt, string passPhrase)
{
string base64String;
using (AesCryptoServiceProvider provider = EncryptedString.GetProvider(Encoding.Default.GetBytes(passPhrase)))
{
byte[] bytes = Encoding.ASCII.GetBytes(plainSourceStringToEncrypt);
ICryptoTransform cryptoTransform = provider.CreateEncryptor();
MemoryStream memoryStream = new MemoryStream();
CryptoStream cryptoStream = new CryptoStream(memoryStream, cryptoTransform, CryptoStreamMode.Write);
cryptoStream.Write(bytes, 0, (int)bytes.Length);
cryptoStream.FlushFinalBlock();
base64String = Convert.ToBase64String(memoryStream.ToArray());
}
return(base64String);
}
